#include<bits/stdc++.h>
using namespace std;
typedef long long ll;

ll pow(ll a, ll b, ll m){
	ll ans = 1;
	while(b){
		if(b & 1)
			ans = ans * a % m;
		a = a * a % m;
		b >>= 1;
	}
	return ans;
}

int main(){
	ios_base::sync_with_stdio(0), cin.tie(0), cout.tie(0);
//	#ifdef ONLINE_JUDGE
//	freopen("sequence.in","r",stdin);
//	freopen("sequence.out","w",stdout);
//	#endif
	
	int n;
	cin >> n;
	
	cout << pow(2, n, 998244353);
	
	return 0;
}